Kensington Expert Mouse Wired Trackball

BH #KEMEPU • MFR #K64325
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Kensington Expert Mouse Wired Trackball
Key Features
  • DiamondEye Optical Tracking Technology
  • Scroll Ring for Comfortable Operation
  • Detachable Wrist Pad
  • Compatible with Windows and Mac Systems
Enjoy comfortable control and accuracy with the Kensington Expert Mouse Wired Trackball. Starting with an ergonomic design including built-in wrist rest, four easily accessible buttons, and a scroll ring surrounding the ball itself, the Expert Mouse offers users maximum control at their fingertips. Diamond Eye optical technology provides you with extreme precision while navigating. Additionally, this Trackball is cross-platform compatible.
More Details
Temporarily Out of Stock
Expected availability: Jun 08, 2026
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Kensington Expert Overview

From Manufacturer

Enjoy comfortable control and accuracy with the Kensington Expert Mouse Wired Trackball. Starting with an ergonomic design including built-in wrist rest, four easily accessible buttons, and a scroll ring surrounding the ball itself, the Expert Mouse offers users maximum control at their fingertips. Diamond Eye optical technology provides you with extreme precision while navigating. Additionally, this Trackball is cross-platform compatible.

Scroll Ring
Scroll comfortably with a minimum of wrist movement with this handy scroll ring immediately surrounding the track ball.
Diamond Eye Optical Technology
Optical sensors provide users with a maximum amount of control over their cursor.
Built-In Wrist Rest
A built in wrist rest provides support and prevents Carpal Tunnel syndrome.
UPC: 000004427278

Kensington Expert Specs

Mouse
dpi
400
Scroll Type
Scroll Wheel
Number of Buttons
4
Mouse Hand Orientation
Ambidextrous
LED Indicator
No
Trackball Size
2.2" / 55 mm
Connectivity
Host Connection
USB-A
Full-Functionality OS Support
Chrome OS, Mac, Windows
General
Color
Gray
Packaging Info
Package Weight
1.335 lb
Box Dimensions (LxWxH)
8.2 x 6.6 x 4.1"

Kensington Expert Reviews

Comfortable and Pleasant

By Reed
Rated 5 out of 5
Date: 2026-02-22

great way to navigate, takes about a day to get used to, then it is second nature.

There are few TRACK BALL companies

By Philip
Rated 5 out of 5
Date: 2025-09-11

And I have tried most of them. having lost the Blue Tooth dongle (it Happens), I decided to do a USB wired Device. I had used other Kensington products, and said Try theirs. OUTSTANDING ! ! ! As I am currently using an Android tablet, I am only using the Left thumb button, but I am TRANSITIONING to a New Linux Laptopn, and will be happy to use ALL the features of the device. BIGGEST seling point: The Ball itself is larger, so less movement needed The Scrolling up/down feature is unique: a RING, around the ball area Clockwise DOWN PAGE, Counterclockwise, UP PAGE, (Nice) ;-) If you USE trackballs, or are needing that concept, I have used trackballs EXCLUSIVELY, for 20 years, and now KENSINGTON is my brand.

See any errors on this page?

Can this device be used with 14" MacBook Pro with ...

Can this device be used with 14" MacBook Pro with M2Max chip?
Asked by: Michael
The Kensington Expert Mouse Wired Trackball is fully compatible with the 14" MacBook Pro M2 Max laptop.
Answered by: Paige K
Date published: 2023-02-10

question

I just bought one of these to replace my aging Microsoft Trackball Explorer. The Kensington Expert Trackball I now have in my possession, cannot seem to operate Photoshop's Selection Tool. Is anyone else experiencing a similar issue?
Asked by: Nick
I am able to use Photoshop's selection tool with this mouse. Granted I'm over a year late to the party.
Answered by: Ian B.
Date published: 2018-08-27

How long is the cord?

How long is the cord?
Asked by: Jack
6 feet in length.
Answered by: Daniel
Date published: 2021-02-24

question

how do i set the mouse to finish typing a word I use a lot. I did set it up so that when I type TY it spells out Thank You but i can't remember how I did?
Asked by: jean s.
This is not a feature of this item. If you are using OS X 10.9 or newer you can enable the feature in your system preferences. (Keyboard pane, Text tab)
Answered by: James B.
Date published: 2018-08-27

What is product's footprint?

What is product's footprint?
Asked by: Ron
It is 5” wide x 6” long
Answered by: Alice
Date published: 2025-05-03

question

Does this work with Mountain lion 10.7.5?
Asked by: joel g.
I have used the Expert Mouse with Mountain lion and everything up to 10.11.3 You will need the installation of TrackballWork 1.3 (that corresponds to Mountain Lion).
Answered by: Simeon R.
Date published: 2018-08-27

question

is it compatible with windows 10?
Asked by: Anonymous
Yes it is.
Answered by: Kensington Expert
Date published: 2018-08-27

question

usb 2 or usb 3?
Asked by: Peter B M.
either. I have yet to find a USB3 port that didn't support it
Answered by: Harvey V.
Date published: 2025-08-27
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